Intro to Chem .

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Intro to Chem .

Periodic Table

groups into

nonmetals

noble gases

halogens

metals

alkaline earth metals

Alkaline earth metals have two valance electrons , have positive valance ,

alkali metals

Alkali metals are soft , highly reactive , have one valance electron , low melting points , & have positive valance .

Periods & groups .

is full of

Atoms

& have

nucleus

electrons

neutrons

protons

atomic mass

atomic number

Around Nucleus

Electrons ( Negative )

Inside Nucleus

Neutrons ( Neutral ) & Protons ( Positive ) .

isotope, atomic mass, atomic number, periodicity, periods, alkalai metals, alkaline earth metals, halogens, noble gases, ions, chemical reaction, reactants, products, reaction rate, kinetic theory